Update swagger-core to 2.1.6 (#74)

Author: scala-steward

build.sbt

@@ -24,7 +24,7 @@ Global / useGpg := false
 
 libraryDependencies ++= Seq(
   "org.scala-lang" % "scala-reflect" % scalaVersion.value,
-  "io.swagger.core.v3" % "swagger-core" % "2.1.5",
+  "io.swagger.core.v3" % "swagger-core" % "2.1.6",
   "com.fasterxml.jackson.module" %% "jackson-module-scala" % "2.12.0",
   "org.scalatest" %% "scalatest" % "3.2.3" % Test,
   "org.slf4j" % "slf4j-simple" % "1.7.30" % Test